#ifndef DBC_FILE_LOADER_H
#define DBC_FILE_LOADER_H
#include "Platform/Define.h"
#include "Utilities/ByteConverter.h"
#include <cassert>

enum
{
    FT_NA='x',                                              //not used or unknown, 4 byte size
    FT_NA_BYTE='X',                                         //not used or unknown, byte
    FT_STRING='s',                                          //char*
    FT_FLOAT='f',                                           //float
    FT_INT='i',                                             //uint32
    FT_BYTE='b',                                            //uint8
    FT_SORT='d',                                            //sorted by this field, field is not included
    FT_IND='n',                                             //the same,but parsed to data
    FT_LOGIC='l'                                            //Logical (boolean)
};

class DBCFileLoader
{
public:
	class Record
	{
	public:
		float getFloat(size_t field) const
		{
			assert(field < file.fieldCount);
			float val = *reinterpret_cast<float*>(offset+file.GetOffset(field));
			EndianConvert(val);
			return val;
		}
		uint32 getUInt(size_t field) const
		{
			assert(field < file.fieldCount);
			uint32 val = *reinterpret_cast<uint32*>(offset+file.GetOffset(field));
			EndianConvert(val);
			return val;
		}
		uint8 getUInt8(size_t field) const
		{
			assert(field < file.fieldCount);
			return *reinterpret_cast<uint8*>(offset+file.GetOffset(field));
		}

		const char *getString(size_t field) const
		{
			assert(field < file.fieldCount);
			size_t stringOffset = getUInt(field);
			assert(stringOffset < file.stringSize);
			return reinterpret_cast<char*>(file.stringTable + stringOffset);
		}

	private:
		Record(DBCFileLoader &file_, unsigned char *offset_): offset(offset_), file(file_) {}
		unsigned char *		offset;
		DBCFileLoader &		file;

		friend class DBCFileLoader;
	};

public:/// c&d
							DBCFileLoader();
							~DBCFileLoader();

public:///
    bool					Load(const char *filename, const char *fmt);
    Record					getRecord(size_t id);							// Get record by id
    /// Get begin iterator over records

    uint32					GetNumRows() const { return recordCount;}
    uint32					GetCols() const { return fieldCount; }
    uint32					GetOffset(size_t id) const { return (fieldsOffset != NULL && id < fieldCount) ? fieldsOffset[id] : 0; }
    bool					IsLoaded() {return (data!=NULL);}
    char*					AutoProduceData(const char* fmt, uint32& count, char**& indexTable);
    char*					AutoProduceStrings(const char* fmt, char* dataTable);
    static uint32			GetFormatRecordSize(const char * format, int32 * index_pos = NULL);
private:

    uint32					recordSize;
    uint32					recordCount;
    uint32					fieldCount;
    uint32					stringSize;
    uint32 *				fieldsOffset;
    unsigned char *			data;
    unsigned char *			stringTable;
};
#endif
